21000331780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55264031}}^1$

素因数の和:55264059

約数の個数: 24

約数和(自身を含む): 46421786880

約数和(自身を除く): 25421455100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55264031, 110528062, 221056124, 276320155, 552640310, 1050016589, 1105280620, 2100033178, 4200066356, 5250082945, 10500165890, 21000331780]

約数ペア:

[(1, 21000331780), (2, 10500165890), (4, 5250082945), (5, 4200066356), (10, 2100033178), (19, 1105280620), (20, 1050016589), (38, 552640310), (76, 276320155), (95, 221056124), (190, 110528062), (380, 55264031)]